Noticed that I forgot to get the x11 and win32 specific display files into the cmake build, so moved them into src/ and added them depending on the target
# Makefile.mingw
#
# Description: Makefile to generate mo files
#
GF_TOP:=..
-include $(GF_TOP)/local.mak
PIDGIN_TREE_TOP?=../../../..
include $(PIDGIN_TREE_TOP)/libpurple/win32/global.mak